Issue Navigator should show all the selected fields eventhough the issue type doesn't have that

When I do a filter the issues for a project by selecting "Any" issue type, the custom fields selected are not showing. I know if I select the issue types which have this fields associated then the fields will be displayed. But this is not a good method because the users might not be knowing this well. It should show the fields in navigator and display the values which are existing for the issues and keep this filed empty for others.